Sieber started with Starcraft 2 for the game release 2010. In autumn 2012 he joined the Vega Squadron team and played Starcraft 2 full-time. He celebrated his first major successes in 2014 when he won the ESL Pro Series Germany twice (spring and winter). In September 2014 he joined the German team Alternate . In May 2016, he won the 2016 WCS Spring Circuit Championship for Team Millenium . From 2017 and 2018 he joined the Arma team. Sieber separated from the Arma team and has been playing for the Mkers team since February 12, 2019.
